@misc{Rączkowski_Józef_(1885–1951)._Red._Kalendarz_1916-1919,
 author={Rączkowski, Józef (1885–1951). Red.},
 address={Kraków ;},
 address={Wiedeń},
 howpublished={online},
 year={1916-1919},
 publisher={"Piast"},
 language={pol},
 title={Kalendarz "Piasta" na Rok Pański...},
 type={Text},
}